Structure via PubChem · Public domain (PubChem)
fluorine-18
Sign in to saveAlso known as 18F, F-18
Fluorine-18 (18F, also called radiofluorine) is a fluorine radioisotope which is an important source of positrons. Its half-life is 109.734 minutes, less than two hours, and one of the shortest of radioisotopes with use outside research. It decays by positron emission 96.7% of the time and electron capture 3.3% of the time. Both modes of decay yield stable oxygen-18.
In the Vinony graph
Within Vinony's link graph, fluorine-18 is referenced by 146 other articles, and connects out to isotope of fluorine, electronvolt and hydroxyl.
It sits within the topics Isotope content page, Isotopes of fluorine and Medical isotopes.
Its subject is documented across 16 Wikipedia language editions.
Key facts
- Isotope.image
- Fluorine-18 decay.svg
- Isotope.image_caption
- Decay over 24 hours
- Isotope.alternate_names
- Fluorine-18
- Isotope.mass_number
- 18
- Isotope.symbol
- F
- Isotope.num_neutrons
- 9
- Isotope.num_protons
- 9
- Isotope.abundance
- Radioisotope
- Isotope.decay_mode1
- Positron emission (97%)
- Isotope.decay_energy1
- 0.6335
- Isotope.decay_mode2
- Electron capture (3%)
- Isotope.decay_energy2
- 1.6555
- Isotope.decay_product
- Oxygen-18
- Isotope.decay_symbol
- O
- Isotope.decay_mass
- 18
- Isotope.mass
- 18.0009380
- Isotope.spin
- 1+
via Wikipedia infobox
Chemical data
- Formula
- F
- Molecular weight
- 18.000937 g/mol
- IUPAC name
- fluorane
- SMILES
- [18F]
- InChIKey
- YCKRFDGAMUMZLT-BJUDXGSMSA-N
- XLogP
- 0.6
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem
Wikidata facts
- Instance of
- isotope of fluorine
- Subclass of
- fluorine
- Mass
- 18.000937325
- Image
- Fluorine-18.svg
Show 10 more facts
- decays to
- oxygen-18
- atomic number
- 9
- neutron number
- 9
- half-life
- 109.77
- spin quantum number
- 1.0
- parity quantum number
- 1
- canonical SMILES
- [F]
- isomeric SMILES
- [18F]
- mass excess
- 873.113
- binding energy
- 137369.484
Sources (8)
via Wikidata · CC0
~3 min read
Encyclopedic overview
6 sectionsContents
- Natural occurrence
- Synthesis
- History
- Chemistry
- Applications
- References
Fluorine-18 (18F, also called radiofluorine) is a fluorine radioisotope which is an important source of positrons. Its half-life is 109.734 minutes, less than two hours, and one of the shortest of radioisotopes with use outside research. It decays by positron emission 96.7% of the time and electron capture 3.3% of the time. Both modes of decay yield stable oxygen-18.
== Natural occurrence == is a cosmogenic trace radioisotope produced by spallation of atmospheric argon or by reaction of protons with oxygen-18 in the air: 18O + p → 18F + n.
Excerpted from Wikipedia’s “fluorine-18” article, available under the CC BY-SA 4.0 licence.